<?xml version="1.0" encoding="utf-8"?>
<!--
Taxonomy based on XBRL standard Version 2.1.
Created by UBmatrix Taxonomy Designer 1.0.0.0 (2007-06-01 16:49).  
Contact www.ubmatrix.com
Copyright (c) 2002-2007 UBmatrix inc., All Rights Reserved
Produced on 2007-06-01 23:07:57
-->
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:wgt-avg="http://www.example.com/wgt-avg" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" targetNamespace="http://www.example.com/wgt-avg" elementFormDefault="qualified" attributeFormDefault="unqualified">
  <annotation>
    <appinfo>
      <link:linkbaseRef 
        xlink:href="formulae.xml"
        xlink:type="simple" 
        xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="WeightedAverage-label.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="WeightedAverage-definition.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links, all" />
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <element id="wgt-avg_EV" name="EV" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_ExposuresDimension" name="ExposuresDimension" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="wgt-avg_HyperCube" name="HyperCube" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="wgt-avg_ObligorGrade" name="ObligorGrade" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_ObligorGrade1" name="ObligorGrade1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_ObligorGrade2" name="ObligorGrade2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_ObligorGrade3" name="ObligorGrade3" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_PD" name="PD" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_PrimaryItems" name="PrimaryItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" abstract="true" nillable="true" />
  <element id="wgt-avg_Risk" name="Risk" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_RiskWeight0" name="RiskWeight0" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_RiskWeight10" name="RiskWeight10" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_RiskWeight150" name="RiskWeight150" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_TotalExposures" name="TotalExposures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
  <element id="wgt-avg_ValidPD" name="ValidPD" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" />
</schema>